<?php

namespace App\Domains\Purchase\Resources;

use Illuminate\Http\Request;
use Illuminate\Http\Resources\Json\JsonResource;

/**
 * @mixin \App\Domains\Purchase\Models\Purchase
 */
class PurchaseResource extends JsonResource
{
    /**
     * @return array<string, mixed>
     */
    public function toArray(Request $request): array
    {
        $items = $this->resource->relationLoaded('items')
            ? $this->resource->getRelation('items')
            : collect();

        $subtotal = $items->reduce(
            fn (float $carry, $item): float => $carry + ((float) $item->precio_unitario * $item->cantidad),
            0.0,
        );

        $total = $items->reduce(
            fn (float $carry, $item): float => $carry + (float) $item->total,
            0.0,
        );

        return [
            'id' => $this->id,
            'tenant_codigo' => $this->tenant_codigo,
            'user_id' => $this->user_id,
            'status' => $this->status,
            'payment_status' => $this->payment_status,
            'payment_method' => $this->payment_method,
            'items' => PurchaseItemResource::collection($items),
            'subtotal' => $this->formatMoney($subtotal),
            'total' => $this->formatMoney($total),
        ];
    }

    protected function formatMoney(float|int|string|null $amount): string
    {
        return number_format((float) ($amount ?? 0), 2, '.', '');
    }
}